4g9z

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Template:STRUCTURE 4g9z

Contents

Lassa nucleoprotein with dsRNA reveals novel mechanism for immune suppression

Template:ABSTRACT PUBMED 23615902

Function

[NCAP_LASSJ] Encapsidates the genome, protecting it from nucleases. The encapsidated genomic RNA is termed the nucleocapsid (NC). Serves as template for viral transcription and replication. The increased presence of protein N in host cell does not seem to trigger the switch from transcription to replication as observed in other negative strain RNA viruses. Disables the host innate defense by interfering with beta interferon (IFN-beta) production. Strongly inhibits the nuclear translocation of IRF3, a protein involved in IFN activation pathway. Also inhibits the activation of IFN-beta and IRF3-dependent promoters (By similarity).

About this Structure

4g9z is a 3 chain structure with sequence from Lassa virus josiah. Full crystallographic information is available from OCA.

Reference

  • Jiang X, Huang Q, Wang W, Dong H, Ly H, Liang Y, Dong C. Structures of arenaviral nucleoproteins with triphosphate dsRNA reveal a unique mechanism of immune suppression. J Biol Chem. 2013 Apr 24. PMID:23615902 doi:10.1074/jbc.M112.420521

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